Blow-out patch



June 12. 1928.

O. ARSENAULT BLOW- OUT PATCH Filed Nov. 10, 1927 Patented June 12, 1928.

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" enew-ove rated Kpblicationfilehnoveniber 10 1927 1 *senavno. as'aaiae. 1 I

This invention relates to a patc hQfor 'repairing tires, particularl for fblowouts Theprincipal objects of theinventioirare toprov ide a patch for this purposewhich 5 includes a shee'tof material to reinforce the inne'1" t ube and another sheet of rnaterial to stand the wear on the "outside,.said-- sheets being separateand both being very flexible to "constitute ay ielding cushionr to rovide a patch'whic'h will not-c'rack andfwill have a greater durability than the patches-now on the market; to provide *a'patch' having an air space that will: prevent heating and friction and provided with a fabric between the two surfaces that have been mentioned for strengthening the patch and connecting it with the end flaps by which it can be handled and also held in position in the tire. This patch contains nothing that will chafe ,20 the inner tube on account of the flexibility of the inner surface thereof and the freedom of the fabric and outer layer of the rubber.

Other objects andadvantages of the invention will appear hereinafter.

Reference is to be had to the acco1npany ing drawings in which Fig. 1 is a plan of a preferred form of patch, constructed in accordance with this invention, laid out fiat;

Fig. 2 is a sectional view line 2-2 in Fig.1; and

Fig. 3 is a transverse sectional view of a tire with a blow-out and with this patch applied in place therein.

The patch is used Very largely in the way now understood in the art, but it is formed of three layers. The piece of cotton fabric lOextends throughout the area of the patch proper and beyond it at its two ends to provide two flaps 11 for use in handling it and adapted to be bent over to hold it in position after it is applied.

On each side of the cotton fabric 10 is placed a layer 12 and 13 of new soft flexible live rubber. These are both cemented hermetically to the opposite surfaces of the cotton fabric 10 all round the edges and preferably in registration with each other. They are left entirely free from the cotton fabric throughout all their central area which leaves a thin air space on each side of the fabric and inside each rubber piece. This constitutes a flexible cushion. The air inside, when it becomes heated, will expand y when it :is in a cool'sta-te.

of same on the enema-1:6 the patcl ueven more flexible than In :placingthe patch in position it-i-s grasped by the twolfiaps ll: and pulled over the blowout-into place. These flaps are 'turnedback if they reach far enough and held in position in thespace inside theouter shoe. Otherwise the lining of the patch in position is the samefasithe ordinary practice. .111 use, itywill be seen that e the :outer sideof the patch there is layer of "liverubberwlfi having an air spacebehindit which =1nake'sIi tdu1-able when subjected to eXternal wear. On. account of the flexibility of the rubber andthe aircushion behind it it does not wear like an ordinary piece of rubberiz ed fabric. If it gets punctured. or worn so as to allow the air in this air space to escape there is an air space behind it on the other side of the cotton fabric 10which 7 still gives it a cushion effect, This layer can be forced by the air pressure out into the hollow or crack in the out-er shoe to a large extent without subjecting the inner layer 12 of rubber, which is secured to the inner tube, to the external wear, as is common in this industry.

Even if both layers of rubber are forced outwardly the inner one is alwaysprotected by the outer one and by the cotton fabric as long as they last. The patch is much more durable than an ordinary patch on account of this feature and also on account of the two layers of rubber to penetrate instead of one. i

The cotton fabric extends throughout the entire area of the patch proper and affords a flexible, but non-stretchable, foundation for the whole patch and keeps the two rubber layers from being stretched or misplaced except throughout the space just inside their U areas and even that space is restricted in this respect. The two end flaps are integral 'with the centralsheet of fabric so that any vents heating and friction. There is nothing about it to wear down and ehafe the inner tube as it works back and forth thereon in use.

Although I have'illustrated'and described, only a single form of the invention" I am atch com risin a center: la er of nonstretchable flexible fabric and a layer of live rubber cemented on each side thereof around the edges of said layers with the center free to formvan air space between said edges onreach side of the fabric.

3. As an article of manufacture, a tire patch comprising a sheet of cotton fabric "having its ends free foruse inhandling and securing the patch in position and provided with a layer of rubber on each side thereof,

the fabric projecting beyond the rubber and providing means for handling the patclnand the patch having an air space between the twolayers of rubber.

LAS an article of manufacture, a ,tire patch comprising a layer of non-stretchable fabric adapted to be mounted on theoutside of the inner tube and a layer of rubber on a the exterior thereof hermetically cemented at its edges and sealed,lcaving an air space or cushion between the fabric and outer layer ofrubber to receive directly the wear from friction of the shoe on the road bed.

In testimony whereof I have hereunto affixed my 1 signature.

oLAUs ARSENAULT. 

